From cc75891dbcb7ba1489c3550a7ed6fe5c2c308424 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 1 Aug 2021 01:25:33 +0100
Subject: [PATCH] own hmac, tests, pass, note origin

Copyrightwise this is fine because IETF licences code in RFCs
appropriately.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 src/utils.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/utils.rs b/src/utils.rs
index 868dd11..8a8d034 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -51,6 +51,7 @@ pub fn token_hmac(key: &[u8], message: &[u8]) -> [u8; HMAC_L] {
 
 #[test]
 fn hmac_test_vectors(){
+  // C&P from RFC 4231
   let vectors = r#"
    Key =          0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b
                   0b0b0b0b                          (20 bytes)
-- 
2.30.2